DOS ain't dead

Smaller C compiler (Announce)

> On this machine, I don't have that installed, only Avast, and even it> whines

Even old Firefox on this ancient Puppy Linux is whining, so I had to manually "Unblock" just to download it from Github.

Just as an experiment, I changed the useless "cannot be run in DOS" stub message in one PE/.EXE, and that reduced some (but not all) warnings. So that's how stupid some of them are, even changing something simple like useless text avoids "detection". The obvious red flags (to us) are claims of "generic" or "heuristic", which are often bogus.